I like List::Compare for things like this. From the docs: 
use strict;
use warnings;

use List::Compare;

my @Llist = qw(abel abel baker camera delta       edward fargo golfer)
+;
my @Rlist = qw(          baker camera delta delta edward fargo golfer 
+hilton);

my $lc = List::Compare->new(\@Llist, \@Rlist);

my @intersection = $lc->get_intersection;

print join ", ", @intersection;

# Results:
# baker, camera, delta, edward, fargo, golfer

[download]
Of course, either of those two lists could consist of only one item.

Cheers,

Brent

-- Yeah, I'm a Delt.

In reply to Re: comparing two array by dorko
in thread comparing two array by paola82

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